Finished this today. Although I haven't read the 360 review, 8/10 seems spot on.
KInda agree with Stiks that it's a bit short but I also think any more would probably have started to drag.
For what it's worth I reckon they managed a more than competent tps which keeps up with all the modern western space marine tps staples (good cover mechanic, solid shooting, good range of weapons, just enough customization etc etc...) and does them all very well.
The ability to shoot robots to pieces with first their armour then limbs flying off and have them still stagger, sway and pull themselves along the floor towards you until their finally finished off with a satisfying explosion was great fun. Also shooting their heads off and turning them on others of their kind is a fun and useful addition.
Most impressive for myself though was the story. No, it wasn't a literary masterpiece but for dumb, space marine tps fodder it had enough twisty-turney Sci-Fi/nation state/big corporation based conspiracy stuff in their to keep me interested 'till the end, the humour was good and (a rare thing for a Japanese game these days)... It made sense.
The only things that stop me scoring it higher are the fact that it didn't have AAA graphics and that the weapon system was a bit limiting. But only a wee bit.
'Nothing is true, all is permissible' (Hassan-i Sabbah).